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Trying to make some even ultimater CCSphere expressions
Hi cows,
I am working with some ultimate CCSphere expressions found here:
These expressions are great, but I would also like to scale my CCSphere’s radius as I dolly in, and pan my CC sphere as I pan the camera.
I managed to get the sphere radius scaling working pretty well with this expression:
d = length(thisComp.activeCamera.pointOfInterest, thisComp.activeCamera.position);
r = 100;
a= 2*Math.acos(r/d);
1000*r*Math.cos(a/2)I’m having major problems translating the camera’s POI to CCSphere’s 2d offset though.
My CCSphere layer is a much higher resolution from my comp (so I can zoom way in)
Comp is 1080p Sphere layer is 8192×4096The best I have gotten is inelegent expression:
POI = from_comp(to_comp(thisComp.layer(“Camera 1”).transform.pointOfInterest));
[8192-4.26667*POI[0],4096-3.7926*POI[1]]For reference, I placed a 3d text layer at the origin of my 3d scene, [960,540,0]. Ideally, I would like the sphere to center to appear married to that text layer when I pan the camera, but I can’t get it to work.
Any suggestions?
Thanks,
-Matt
Need a quick break from motion graphics?
Try my game Constellation at:
https://www.paperdragongames.com -
2 Replies
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you might try making the sphere layer a 3d layer and then also setting that layer to auto orient towards camera (layer>transform>auto orient). the layer should then obey the 3d camera position and point of interest… depending on how you are controlling your camera it can work pretty well.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
Hi Kevin,
I had tried that initially, and it seemed like it would work pretty well if I just had the sphere in the scene. The problem is, I also have 3d text layers. The auto oriented 3d sphere didn’t seem like it was moving in the same world as the text layers.
-Matt
Need a quick break from motion graphics?
Try my game Constellation at:
https://www.paperdragongames.com
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